1 files changed, 115 insertions, 0 deletions
diff --git a/dev-lang/zig/zig-0.9.1.ebuild b/dev-lang/zig/zig-0.9.1.ebuild
new file mode 100644
index 0000000..2227501
--- /dev/null
+++ b/dev-lang/zig/zig-0.9.1.ebuild
@@ -0,0 +1,115 @@
+# Copyright 2019-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+LLVM_MAX_SLOT=13
+inherit cmake llvm check-reqs
+
+DESCRIPTION="A robust, optimal, and maintainable programming language"
+HOMEPAGE="https://ziglang.org/"
+if [[ ${PV} == 9999 ]]; then
+	EGIT_REPO_URI="https://github.com/ziglang/zig.git"
+	inherit git-r3
+else
+	SRC_URI="https://ziglang.org/download/${PV}/${P}.tar.xz"
+	KEYWORDS="~amd64 ~arm ~arm64"
+fi
+
+LICENSE="MIT"
+SLOT="0"
+IUSE="test +threads"
+RESTRICT="!test? ( test )"
+
+PATCHES=("${FILESDIR}/${P}-fix-single-threaded.patch")
+
+BUILD_DIR="${S}/build"
+
+# According to zig's author, zig builds that do not support all targets are not
+# supported by the upstream project.
+ALL_LLVM_TARGETS=(
+	AArch64 AMDGPU ARM AVR BPF Hexagon Lanai Mips MSP430 NVPTX
+	PowerPC RISCV Sparc SystemZ WebAssembly X86 XCore
+)
+ALL_LLVM_TARGETS=( "${ALL_LLVM_TARGETS[@]/#/llvm_targets_}" )
+LLVM_TARGET_USEDEPS="${ALL_LLVM_TARGETS[@]/%/(-)?}"
+
+IUSE="test threads ${ALL_LLVM_TARGETS[*]}"
+
+RDEPEND="
+	sys-devel/clang:${LLVM_MAX_SLOT}
+	>=sys-devel/lld-${LLVM_MAX_SLOT}
+	<sys-devel/lld-$((${LLVM_MAX_SLOT} + 1))
+	sys-devel/llvm:${LLVM_MAX_SLOT}[${LLVM_TARGET_USEDEPS// /,}]
+"
+DEPEND="${RDEPEND}"
+
+llvm_check_deps() {
+	has_version "sys-devel/clang:${LLVM_SLOT}"
+}
+
+# see https://github.com/ziglang/zig/wiki/Troubleshooting-Build-Issues#high-memory-requirements
+CHECKREQS_MEMORY="10G"
+
+pkg_setup() {
+	llvm_pkg_setup
+	check-reqs_pkg_setup
+}
+
+src_configure() {
+	local mysedargs=() llvm_target arch
+	for target in "${ALL_LLVM_TARGETS[@]}"; do
+		if ! use $target; then
+			llvm_target=${target#llvm_targets_}
+			case $llvm_target in
+				AArch64) arch=(aarch64 aarch64_be aarch64_32);;
+				AMDGPU) arch=(amdgcn);;
+				ARM) arch=(thumb thumbeb arm armeb);;
+				AVR) arch=(avr);;
+				BPF) arch=(bpfel bpfeb);;
+				Hexagon) arch=(hexagon);;
+				Lanai) arch=(lanai);;
+				Mips) arch=(mips mipsel mips64 mips64el);;
+				MSP430) arch=(msp430);;
+				NVPTX) arch=(nvptx nvptx64);;
+				PowerPC) arch=(powerpc powerpcle powerpc64 powerpc64le);;
+				RISCV) arch=(riscv32 riscv64);;
+				Sparc) arch=(sparc sparcv9 sparcel);;
+				SystemZ) arch=(s390x);;
+				WebAssembly) arch=(wasm32 wasm64);;
+				X86) arch=(i386 x86_64);;
+				XCore) arch=(xcore);;
+				*) die "unhandled target"
+			esac
+			for a in ${arch[@]}; do
+				mysedargs+=(
+					-e "/^pub fn targetTriple(/,/^}/s/\.$a => .*/.$a => return error.@\"Zig compiled without LLVM $llvm_target\",/"
+				)
+			done
+			mysedargs+=(
+				-e "
+					/^fn initializeLLVMTarget(/,/^}/ {
+						/\.$a => {/,/},$/ {
+							s/=>.*/=> unreachable,/
+							/=>/!d
+						}
+					}
+				"
+			)
+		fi
+	done
+	sed -i "${mysedargs[@]}" src/codegen/llvm.zig || die
+
+	local mycmakeargs=(
+		-DZIG_USE_CCACHE=OFF
+		-DZIG_PREFER_CLANG_CPP_DYLIB=ON
+		-DZIG_SINGLE_THREADED="$(usex threads OFF ON)"
+	)
+
+	cmake_src_configure
+}
+
+src_test() {
+	cd "${BUILD_DIR}" || die
+	./zig build test || die
+}